Optical fibres are made using processes like MCVD and OFD where silicon tetrachloride is oxidized to pure silica in the presence of oxygen.
12.
Normally the waste silicon tetrachloride is recycled but this adds to the cost of manufacture as it needs to be heated to 1800 �F.
13.
Early research used an expensive additive called fumed silica, an amorphous form of silica made by combustion of silicon tetrachloride in a hydrogen-oxygen flame.
14.
Due to the rapid growth in manufacturing in China and the lack of regulatory controls, there have been reports of the dumping of waste silicon tetrachloride.
15.
Gases such as silicon tetrachloride ( SiCl 4 ) or germanium tetrachloride ( GeCl 4 ) are injected with oxygen in the end of the tube.
16.
One common method involves adding silicon tetrachloride to a hydrogen oxygen flame, however use of this precursor results in environmentally unfriendly by-products including chlorine and hydrochloric acid.
17.
Hyde attacked the puzzle from an unconventional angle : He heated the basic raw materials-- sources of silicon and oxygen-- by running a volatile gas called silicon tetrachloride through an oxygen flame.
18.
Crude TiCl 4 contains a variety of other volatile halides, including vanadyl chloride ( VOCl 3 ), silicon tetrachloride ( SiCl 4 ), and tin tetrachloride ( SnCl 4 ), which must be separated.
19.
Hyde attacked the puzzle from an unconventional angle : He heated the basic raw materials _ sources of silicon and oxygen _ by running a volatile gas called silicon tetrachloride through an oxygen flame.
20.
Silicone rubber based pressure-sensitive adhesives require special tackifiers based on " MQ " silicate resins, composed of a monofunctional trimethyl silane ( " M " ) reacted with quadrafunctional silicon tetrachloride ( " Q " ).
